12th Biology chapter 4: full solution, notes, MCQ, & free PDF | Bihar board

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12th Biology chapter 4: cover all important question with new latest pattern. you can download Biology chapter 4 notes & full solution as PDF format in English. below we are goin to cover chapter 4 Biology class 12 Bihar board
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12th Biology chapter 4 Bihar board with NCERT-Details & Highlights

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important for exam Bihar board & other state board
pattern & Level  NCERT & State level question

12th Biology chapter 4 all objective solutions – download PDF

Question 1. RCH means

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    • (a) Routine check-up of health (regular health check-up)
      (b) Reproduction cum hygiene (fertility and hygiene)
      (c) Reversible contraceptive hazards (inverse hazards of contraceptive)
      (d) Reproduction and child health care (Reproductive and child health service)

Answer:(d) Reproduction and child health care

Question 2. Which of the following is a drugless intrauterine device?

    • (a) CuT
      (b) lipase loop
      (c) Cu7
      (d) LNG-20

Answer: (b) lipase loop

Question 3. The main drawback of intrauterine contraceptive devices (IUDs) is that

    • (a) the device is permanently placed in the uterus and cannot be removed even if the couple wants a child.
      (b) This device can be inserted into the uterus through the vagina only by the physician.
      (c) The tips come out without the will of the holder.
      (d) (a) and (c) both.

Answer: (b) This device can be inserted into the uterus through the vagina only by the physician.

Question 4. Which of the following is not a characteristic of an ideal contraceptive?

    • (a) easy to use
      (b) irreversible
      (c) readily available
      (d) less side effects

Ans: (b) irreversible

Question 5. IUDs prevent pregnancy by

    • (a) inhibiting the physiological and morphological changes of the uterus necessary for implantation
      (b) increasing the phagocytosis of spermatozoa inside the uterus
      (c) reducing sperm motility and fertilization capacity
      (d) ) All of the above.

Answer: (d) All of the above.

Question 6. What is the function of Copper-T?

    • (a) inhibiting ovulation
      (b) preventing fertilization
      (c) preventing implantation of blastocyst
      (d) stopping gametogenesis

Ans: (b) stopping fertilization

Question 7. Progesterone pills prevent pregnancy by blocking

    • (a) egg formation
      (b) fertilization
      (c) implantation
      (d) none of these.

Answer: (a) Egg formation

Question 8. On which of the following facts is the method of periodic abstinence based?

    • (a) Ovulation occurs on the 14th day of the season.
      (b) Ovum lives for about 1-2 days.
      (c) Sperm lives for about 3 days.
      (d. All of the above.

Answer: (d) All of the above.

Question 9. The best way to reduce the population in the country is to

    • (a) make people literate
      (b) have good houses
      (c) kill more number of people.
      (d) To follow and implement family planning.

Answer: (d) To follow and implement family planning.

Question 10. A multiload device contains

    • (a) manganese
      (b) iron
      (c) copper
      (d) calcium.

Answer: (c) Copper

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Question 11. The main constituent of oral contraceptive pills is

    • (a) progesterone-estrogen
      (b) growth hormone
      (c) thyroxine
      (d) luteinizing hormone.

Answer: (a) progesterone-estrogen

Question 12. Which of the following devices is considered the safest for birth control?

    • (a) Recurrent method
      (b) Use of physical barrier
      (c) Abortion of unwanted pregnancy
      (d) Sterilization technique

Answer: (d) Sterilization technique

Question 13. Which one of the following methods is most widely adopted for contraception in India at present?

    • (a) Cervical cap
      (b) Tubectomy
      (c) Diaphragms
      (d) IUDs (Intrauterine device)

Answer: (d) IUDs (Intrauterine device)

Question 14. Which statement is correct regarding Vasectomy? ,

    • (a) It inhibits the production of sperms in the testis.
      (b) It stops the production of semen.
      (c) It prevents the movement of sperm in the urethra.
      (d) It prevents a man’s penis from developing.

Answer: (c) It stops the movement of sperm in the urethra.

Question 15. Population growth in India is/are the cause of

    • (a) increase in birth rate
      (b) decline in death rate
      (c) lack of education
      (d) all of the above.

Answer: (d) All of the above.

Question 16. The device used by women for birth control is

    • (a) Diaphragm
      (b) Condom
      (c) Copper-T
      (d) All of the above.

Answer: (c) Copper-T

Question 17. Copper ions released from Intrauterine Devices (IUDs)

    • (a) inhibit ovulation.
      (b) make the uterus unfit for implantation.
      (c) Increases phagocytosis of sperms.
      (d) reduce the motility of sperms.

Answer: (d) Reduce the motility of sperms.

Question 18. Which statement is correct regarding subcutaneous implantation of synthesized progesterone?

    • (a) It is a contraceptive technique.
      (b) It acts by inhibiting ovulation and inhibiting the motility of sperms.
      (c) Six matchstick-sized capsules of progesterone steroid are applied to the skin of the forearm above the elbow.’
      (d. All of the above.

Answer: (d) All of the above.

Question 19. Which of the following statements regarding HIV. Hepatitis B, Gonorrhea and Dichomoniasis is correct?

    • (a) Trichomoniasis is an STD while others are not.
      (b) Gonorrhea is a virus borne disease while others are bacterial diseases.
      (c) HIV is a pathogen while others are diseases.
      (d) Hepatitis B is completely eradicated while others are not.

Answer: (c) HIV is a pathogen, while others are diseases.

Question 20. World AIDS Day is celebrated on

    • (a) 21st December
      (b) 1st December.
      (c) 1st November
      (d) 11th June.

Answer: (b) 1st December.

12th biology chapter 4 important mcq solution 

Question 21. Common modes of transmission of AIDS are

    • (a) sexual intercourse
      (b) blood transfusion
      (c) placental transfer
      (d) all of the above.

Answer: (d) All of the above.

Question 22. Which of the following STDs are not completely cured? ,

    • (a) Chlamydiasis, Gonorrhea, Trichomoniasis
      (b) Conchroid, Syphilis, Genital warts
      (c) AIDS, Syphilis, Hepatitis B
      (d) AIDS, Genital herpes, Hepatitis B

Ans: (d) AIDS, Genital herpes, Hepatitis B

Question 23. Hepatitis B is transmitted through

    • (a) blood transfusion
      (b) intimate physical relationship
      (c) sexually
      (d) all of the above.

Answer: (d) All of the above.

Question 24. To prevent the transmission of STDS we should(i) abstain from sex with multiple persons
(ii) always have unprotected sex
(iii) use of condom during intercourse
(iv) have sex with unknown person Not to make
(v) Not to share needles.

    • (a) (i), (ii), (iii), (iv), (v)
      (b) (i), (iii), (iv), (v)
      (c) (i), (ii) , (iii)
      (d) (i), (ii), (iv)

Answer: (b) (i), (iii), (iv), (v)

Question 25. AIDS was first reported in

    • (a) USA
      (b) Nigeria
      (c) Ghana
      (d) India.

Answer: (a) USA

Question 26. The sexually transmitted disease that affects both male and female reproductive organs and can destroy the eyes of babies born to infected mothers is

    • (a) AIDS
      (b) syphilis
      (c) gonorrhea
      (d) Hepatitis.

Answer: (c) Gonorrhea

Question 27. A sexually transmitted disease characterized by the presence of chancre on the genital organs is caused by infection of

    • (a) Treponema pallidum
      (b) Neisseria gonorrhoeae
      (c) Human immunodeficiency virus
      (d) Hepatitis B virus.

Answer: (a) Treponema pallidum

Question 28. Which one of the following is a method of birth control?

    • (a) IUDs
      (b) GIFT
      (c) HTF
      (d) IVF-ET

Answer: (a) IUDs

Question 29. The first successful case of IVF-ET technology was reported by which of the following?

    • (a) Lewis Joy Brown and Benting Best
      (b) Patrick Steptoe and Robert Edwards
      (c) Robert Steptoe and Gilbert Brown
      (d) Bayliss and Sterling Taylor

Answer: (b) Patrick Steptoe and Robert Edwards

Question 30. Which one of the following techniques is used in the test tube baby programme? is used?

    • (a) Intra Cytoplasmic Sperm Injection (ICSI)
      (b) Intra Uterine Insemination (IUI)
      (c) Gamete Intra Fallopian Transfer (GIFT)
      (d) Zygote Intra Fallopian Transfer (ZIFT)

Ans: (d) Zygote Intra Fallopian Transfer (ZIFT) )

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Question 31. Which of the following is a fallopian in vitro fertilization technique? is transferred to the tube?

    • (a) embryo only, up to the eight celled stage
      (b) either the zygote or the early embryo with the eight celled stage
      (c) the embryo of the 32 celled stage
      (d) the zygote only

Ans: (b) either the zygote or the eight celled stage early embryo

Question 32. Gamete Intra Fallopian Transfer (GIFT) technique is suggested to those women

    • (a) who cannot produce eggs
      (b) who cannot keep the fetus in the uterus
      (c) whose cervical canal is so narrow that sperm cannot enter them
      (d) which can not provide a suitable environment for fertilization.

Answer: (a) Which cannot produce eggs

Question 33. Which of the following options is used for the treatment of infertility in couples whose male partner has very low sperm count?

    • (a) IUD
      (b) GIFT
      (c) IUI
      (d) None of these

Answer: (c) IUI

Question 34. The method in which a sperm is directly injected into the ovum under assisted reproductive technology is called

    • (a) GIFT
      (b) ZIFT
      (c) ICSI
      (d) FT

Answer: (c) ICSI

Question 35. An increase in the IMR and a decrease in the MMR in a population will result in

    • (a) the rate of growth will increase rapidly
      (b) the rate of growth will decrease
      (c) there will be no significant change in the rate of growth
      (d) The result is explosive population growth.

Answer: (b) The rate of growth will decrease

Question 36. The beginning of creating a healthy breeding community at the national level in our country was started in this year

    • (a) 1950s
      (b) 1960s
      (c) 1980s
      (d) 1990s

Answer: (a) 1950s

Question 37. Among the sexually transmitted diseases given below, identify the disease which
does not specifically affect the reproductive organs.

    • (a) Syphilis
      (b) AIDS
      (c) Gonorrhea
      (d) Genital warts

Answer: (b) AIDS

Question 38. Condom is one of the famous contraceptives. The reasons for this are

    • (a) it is an effective barrier to insemination
      (b) it does not interfere with sexual intercourse
      (c) it helps in reducing the chances of STDs
      (d) all the above

answers: (b) it does not interfere with intercourse

Question 39. A correct surgical procedure as a contraceptive method is

    • (a) Ovariectomy
      (b) Hysterectomy
      (c) Vasectomy
      (d) Castration .

Answer: (c) Vasectomy

Question 40. Which of the following is a traditional method of contraception?

    • (a) Implantation
      (b) Lactating Menorrhagia
      (c) Condom
      (d) Sterilization

Answer: (b) Lactating Menorrhagia

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04 Math
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